diff options
Diffstat (limited to 'lib/systems/parse.nix')
| -rw-r--r-- | lib/systems/parse.nix | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/lib/systems/parse.nix b/lib/systems/parse.nix new file mode 100644 index 000000000000..f6315b8ad2a9 --- /dev/null +++ b/lib/systems/parse.nix @@ -0,0 +1,173 @@ +# Define the list of system with their properties. Only systems tested for +# Nixpkgs are listed below + +with import ../lists.nix; +with import ../types.nix; +with import ../attrsets.nix; + +let + lib = import ../default.nix; + setTypesAssert = type: pred: + mapAttrs (name: value: + #assert pred value; + setType type ({ inherit name; } // value)); + setTypes = type: setTypesAssert type (_: true); + +in + +rec { + + isSignificantByte = isType "significant-byte"; + significantBytes = setTypes "significant-byte" { + bigEndian = {}; + littleEndian = {}; + }; + + + isCpuType = isType "cpu-type"; + cpuTypes = with significantBytes; setTypesAssert "cpu-type" + (x: elem x.bits [8 16 32 64 128] + && (if 8 < x.bits + then isSignificantByte x.significantByte + else !(x ? significantByte))) + { + arm = { bits = 32; significantByte = littleEndian; family = "arm"; }; + armv5tel = { bits = 32; significantByte = littleEndian; family = "arm"; }; + armv6l = { bits = 32; significantByte = littleEndian; family = "arm"; }; + armv7a = { bits = 32; significantByte = littleEndian; family = "arm"; }; + armv7l = { bits = 32; significantByte = littleEndian; family = "arm"; }; + aarch64 = { bits = 64; significantByte = littleEndian; family = "arm"; }; + i686 = { bits = 32; significantByte = littleEndian; family = "x86"; }; + x86_64 = { bits = 64; significantByte = littleEndian; family = "x86"; }; + mips64el = { bits = 32; significantByte = littleEndian; family = "mips"; }; + powerpc = { bits = 32; significantByte = bigEndian; family = "powerpc"; }; + }; + + isVendor = isType "vendor"; + vendors = setTypes "vendor" { + apple = {}; + pc = {}; + unknown = {}; + }; + + isExecFormat = isType "exec-format"; + execFormats = setTypes "exec-format" { + aout = {}; # a.out + elf = {}; + macho = {}; + pe = {}; + unknown = {}; + }; + + isKernelFamily = isType "kernel-family"; + kernelFamilies = setTypes "kernel-family" { + bsd = {}; + unix = {}; + windows-nt = {}; + dos = {}; + }; + + isKernel = x: isType "kernel" x; + kernels = with execFormats; with kernelFamilies; setTypesAssert "kernel" + (x: isExecFormat x.execFormat && all isKernelFamily (attrValues x.families)) + { + cygwin = { execFormat = pe; families = { inherit /*unix*/ windows-nt; }; }; + darwin = { execFormat = macho; families = { inherit unix; }; }; + freebsd = { execFormat = elf; families = { inherit unix bsd; }; }; + linux = { execFormat = elf; families = { inherit unix; }; }; + netbsd = { execFormat = elf; families = { inherit unix bsd; }; }; + none = { execFormat = unknown; families = { inherit unix; }; }; + openbsd = { execFormat = elf; families = { inherit unix bsd; }; }; + solaris = { execFormat = elf; families = { inherit unix; }; }; + win32 = { execFormat = pe; families = { inherit dos; }; }; + }; + + + isAbi = isType "abi"; + abis = setTypes "abi" { + gnu = {}; + msvc = {}; + eabi = {}; + androideabi = {}; + unknown = {}; + }; + + isSystem = isType "system"; + mkSystem = { cpu, vendor, kernel, abi }: + assert isCpuType cpu && isVendor vendor && isKernel kernel && isAbi abi; + setType "system" { + inherit cpu vendor kernel abi; + }; + + is64Bit = matchAttrs { cpu = { bits = 64; }; }; + is32Bit = matchAttrs { cpu = { bits = 32; }; }; + isi686 = matchAttrs { cpu = cpuTypes.i686; }; + isx86_64 = matchAttrs { cpu = cpuTypes.x86_64; }; + + isDarwin = matchAttrs { kernel = kernels.darwin; }; + isLinux = matchAttrs { kernel = kernels.linux; }; + isUnix = matchAttrs { kernel = { families = { inherit (kernelFamilies) unix; }; }; }; + isWindows = s: matchAttrs { kernel = { families = { inherit (kernelFamilies) windows-nt; }; }; } s + || matchAttrs { kernel = { families = { inherit (kernelFamilies) dos; }; }; } s; + + + mkSkeletonFromList = l: { + "2" = { cpu = elemAt l 0; kernel = elemAt l 1; }; + "4" = { cpu = elemAt l 0; vendor = elemAt l 1; kernel = elemAt l 2; abi = elemAt l 3; }; + "3" = # Awkwards hacks, beware! + if elemAt l 1 == "apple" + then { cpu = elemAt l 0; vendor = "apple"; kernel = elemAt l 2; } + else if (elemAt l 1 == "linux") || (elemAt l 2 == "gnu") + then { cpu = elemAt l 0; kernel = elemAt l 1; abi = elemAt l 2; } + else throw "Target specification with 3 components is ambiguous"; + }.${toString (length l)} + or (throw "system string has invalid number of hyphen-separated components"); + + # This should revert the job done by config.guess from the gcc compiler. + mkSystemFromSkeleton = { cpu + , # Optional, but fallback too complex for here. + # Inferred below instead. + vendor ? assert false; null + , kernel + , # Also inferred below + abi ? assert false; null + } @ args: let + getCpu = name: + attrByPath [name] (throw "Unknown CPU type: ${name}") + cpuTypes; + getVendor = name: + attrByPath [name] (throw "Unknown vendor: ${name}") + vendors; + getKernel = name: + attrByPath [name] (throw "Unknown kernel: ${name}") + kernels; + getAbi = name: + attrByPath [name] (throw "Unknown ABI: ${name}") + abis; + + system = rec { + cpu = getCpu args.cpu; + vendor = + /**/ if args ? vendor then getVendor args.vendor + else if isDarwin system then vendors.apple + else if isWindows system then vendors.pc + else vendors.unknown; + kernel = getKernel args.kernel; + abi = + /**/ if args ? abi then getAbi args.abi + else if isLinux system then abis.gnu + else if isWindows system then abis.gnu + else abis.unknown; + }; + + in mkSystem system; + + mkSystemFromString = s: mkSystemFromSkeleton (mkSkeletonFromList (lib.splitString "-" s)); + + doubleFromSystem = { cpu, vendor, kernel, abi, ... }: "${cpu.name}-${kernel.name}"; + + tripleFromSystem = { cpu, vendor, kernel, abi, ... } @ sys: assert isSystem sys; let + optAbi = lib.optionalString (abi != abis.unknown) "-${abi.name}"; + in "${cpu.name}-${vendor.name}-${kernel.name}${optAbi}"; + +} |